<?php

    /**
     * PHPExcel_Worksheet_Column
     * Copyright (c) 2006 - 2015 PHPExcel
     * This library is free software; you can redistribute it and/or
     * modify it under the terms of the GNU Lesser General Public
     * License as published by the Free Software Foundation; either
     * version 2.1 of the License, or (at your option) any later version.
     * This library is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * Lesser General Public License for more details.
     * You should have received a copy of the GNU Lesser General Public
     * License along with this library; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     * @category   PHPExcel
     * @package    PHPExcel_Worksheet
     * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
     * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
     * @version    ##VERSION##, ##DATE##
     */
    class PHPExcel_Worksheet_Column {
        /**
         * PHPExcel_Worksheet
         * @var PHPExcel_Worksheet
         */
        private $parent;
        /**
         * Column index
         * @var string
         */
        private $columnIndex;

        /**
         * Create a new column
         * @param PHPExcel_Worksheet $parent
         * @param string             $columnIndex
         */
        public function __construct(PHPExcel_Worksheet $parent = null, $columnIndex = 'A') {
            // Set parent and column index
            $this->parent      = $parent;
            $this->columnIndex = $columnIndex;
        }

        /**
         * Destructor
         */
        public function __destruct() {
            unset($this->parent);
        }

        /**
         * Get column index
         * @return string
         */
        public function getColumnIndex() {
            return $this->columnIndex;
        }

        /**
         * Get cell iterator
         * @param    integer $startRow The row number at which to start iterating
         * @param    integer $endRow   Optionally, the row number at which to stop iterating
         * @return PHPExcel_Worksheet_CellIterator
         */
        public function getCellIterator($startRow = 1, $endRow = null) {
            return new PHPExcel_Worksheet_ColumnCellIterator($this->parent, $this->columnIndex, $startRow, $endRow);
        }
    }
